/* Set the defaults for DataTables initialisation */
$.extend( true, $.fn.dataTable.defaults, {
  "sDom":
    "<'row'<'col-xs-6'l><'col-xs-6'f>r>"+
    "t"+
    "<'row'<'col-xs-6'i><'col-xs-6'p>>",
  "oLanguage": {
    "sLengthMenu": "_MENU_ records per page"
  }
} );


/* Default class modification */
$.extend( $.fn.dataTableExt.oStdClasses, {
  "sWrapper": "dataTables_wrapper form-inline",
  "sFilterInput": "form-control input-sm",
  "sLengthSelect": "form-control input-sm"
} );

// In 1.10 we use the pagination renderers to draw the Bootstrap paging,
// rather than  custom plug-in
if ( $.fn.dataTable.Api ) {
  $.fn.dataTable.defaults.renderer = 'bootstrap';
  $.fn.dataTable.ext.renderer.pageButton.bootstrap = function ( settings, host, idx, buttons, page, pages ) {
    var api = new $.fn.dataTable.Api( settings );
    var classes = settings.oClasses;
    var lang = settings.oLanguage.oPaginate;
    var btnDisplay, btnClass;

    var attach = function( container, buttons ) {
      var i, ien, node, button;
      var clickHandler = function ( e ) {
        e.preventDefault();
        if ( e.data.action !== 'ellipsis' ) {
          api.page( e.data.action ).draw( false );
        }
      };

      for ( i=0, ien=buttons.length ; i<ien ; i++ ) {
        button = buttons[i];

        if ( $.isArray( button ) ) {
          attach( container, button );
        }
        else {
          btnDisplay = '';
          btnClass = '';

          switch ( button ) {
            case 'ellipsis':
              btnDisplay = '&hellip;';
              btnClass = 'disabled';
              break;

            case 'first':
              btnDisplay = lang.sFirst;
              btnClass = button + (page > 0 ?
                '' : ' disabled');
              break;

            case 'previous':
              btnDisplay = lang.sPrevious;
              btnClass = button + (page > 0 ?
                '' : ' disabled');
              break;

            case 'next':
              btnDisplay = lang.sNext;
              btnClass = button + (page < pages-1 ?
                '' : ' disabled');
              break;

            case 'last':
              btnDisplay = lang.sLast;
              btnClass = button + (page < pages-1 ?
                '' : ' disabled');
              break;

            default:
              btnDisplay = button + 1;
              btnClass = page === button ?
                'active' : '';
              break;
          }

          if ( btnDisplay ) {
            node = $('<li>', {
                'class': classes.sPageButton+' '+btnClass,
                'aria-controls': settings.sTableId,
                'tabindex': settings.iTabIndex,
                'id': idx === 0 && typeof button === 'string' ?
                  settings.sTableId +'_'+ button :
                  null
              } )
              .append( $('<a>', {
                  'href': '#'
                } )
                .html( btnDisplay )
              )
              .appendTo( container );

            settings.oApi._fnBindAction(
              node, {action: button}, clickHandler
            );
          }
        }
      }
    };

    attach(
      $(host).empty().html('<ul class="pagination"/>').children('ul'),
      buttons
    );
  }
}
else {
  // Integration for 1.9-
  $.fn.dataTable.defaults.sPaginationType = 'bootstrap';

  /* API method to get paging information */
  $.fn.dataTableExt.oApi.fnPagingInfo = function ( oSettings )
  {
    return {
      "iStart":         oSettings._iDisplayStart,
      "iEnd":           oSettings.fnDisplayEnd(),
      "iLength":        oSettings._iDisplayLength,
      "iTotal":         oSettings.fnRecordsTotal(),
      "iFilteredTotal": oSettings.fnRecordsDisplay(),
      "iPage":          oSettings._iDisplayLength === -1 ?
        0 : Math.ceil( oSettings._iDisplayStart / oSettings._iDisplayLength ),
      "iTotalPages":    oSettings._iDisplayLength === -1 ?
        0 : Math.ceil( oSettings.fnRecordsDisplay() / oSettings._iDisplayLength )
    };
  };

  /* Bootstrap style pagination control */
  $.extend( $.fn.dataTableExt.oPagination, {
    "bootstrap": {
      "fnInit": function( oSettings, nPaging, fnDraw ) {
        var oLang = oSettings.oLanguage.oPaginate;
        var fnClickHandler = function ( e ) {
          e.preventDefault();
          if ( oSettings.oApi._fnPageChange(oSettings, e.data.action) ) {
            fnDraw( oSettings );
          }
        };

        $(nPaging).append(
          '<ul class="pagination">'+
            '<li class="prev disabled"><a href="#">&larr; '+oLang.sPrevious+'</a></li>'+
            '<li class="next disabled"><a href="#">'+oLang.sNext+' &rarr; </a></li>'+
          '</ul>'
        );
        var els = $('a', nPaging);
        $(els[0]).bind( 'click.DT', { action: "previous" }, fnClickHandler );
        $(els[1]).bind( 'click.DT', { action: "next" }, fnClickHandler );
      },

      "fnUpdate": function ( oSettings, fnDraw ) {
        var iListLength = 5;
        var oPaging = oSettings.oInstance.fnPagingInfo();
        var an = oSettings.aanFeatures.p;
        var i, ien, j, sClass, iStart, iEnd, iHalf=Math.floor(iListLength/2);

        if ( oPaging.iTotalPages < iListLength) {
          iStart = 1;
          iEnd = oPaging.iTotalPages;
        }
        else if ( oPaging.iPage <= iHalf ) {
          iStart = 1;
          iEnd = iListLength;
        } else if ( oPaging.iPage >= (oPaging.iTotalPages-iHalf) ) {
          iStart = oPaging.iTotalPages - iListLength + 1;
          iEnd = oPaging.iTotalPages;
        } else {
          iStart = oPaging.iPage - iHalf + 1;
          iEnd = iStart + iListLength - 1;
        }

        for ( i=0, ien=an.length ; i<ien ; i++ ) {
          // Remove the middle elements
          $('li:gt(0)', an[i]).filter(':not(:last)').remove();

          // Add the new list items and their event handlers
          for ( j=iStart ; j<=iEnd ; j++ ) {
            sClass = (j==oPaging.iPage+1) ? 'class="active"' : '';
            $('<li '+sClass+'><a href="#">'+j+'</a></li>')
              .insertBefore( $('li:last', an[i])[0] )
              .bind('click', function (e) {
                e.preventDefault();
                oSettings._iDisplayStart = (parseInt($('a', this).text(),10)-1) * oPaging.iLength;
                fnDraw( oSettings );
              } );
          }

          // Add / remove disabled classes from the static elements
          if ( oPaging.iPage === 0 ) {
            $('li:first', an[i]).addClass('disabled');
          } else {
            $('li:first', an[i]).removeClass('disabled');
          }

          if ( oPaging.iPage === oPaging.iTotalPages-1 || oPaging.iTotalPages === 0 ) {
            $('li:last', an[i]).addClass('disabled');
          } else {
            $('li:last', an[i]).removeClass('disabled');
          }
        }
      }
    }
  } );
}


/*
 * TableTools Bootstrap compatibility
 * Required TableTools 2.1+
 */
if ( $.fn.DataTable.TableTools ) {
  // Set the classes that TableTools uses to something suitable for Bootstrap
  $.extend( true, $.fn.DataTable.TableTools.classes, {
    "container": "DTTT btn-group",
    "buttons": {
      "normal": "btn btn-default",
      "disabled": "disabled"
    },
    "collection": {
      "container": "DTTT_dropdown dropdown-menu",
      "buttons": {
        "normal": "",
        "disabled": "disabled"
      }
    },
    "print": {
      "info": "DTTT_print_info modal"
    },
    "select": {
      "row": "active"
    }
  } );

  // Have the collection use a bootstrap compatible dropdown
  $.extend( true, $.fn.DataTable.TableTools.DEFAULTS.oTags, {
    "collection": {
      "container": "ul",
      "button": "li",
      "liner": "a"
    }
  } );
}

